Great report, thanks Bert. I'll review. Bill
On Mon, Jun 15, 2015 at 7:19 AM, Bert Huijben <b...@qqmail.nl> wrote: > Trying yet another e-mail address... Nice that this just bounces instead > of being moderated :( > > Bert > > > -----Original Message----- > > From: Bert Huijben [mailto:rhuij...@collab.net] > > Sent: maandag 15 juni 2015 14:04 > > To: d...@apr.apache.org > > Cc: Stephen White; dev@subversion.apache.org > > Subject: [Patch] apr_file_path_merge returns incorrect truepath on > certain > > 'short paths' on Windows > > > > Hi, > > > > In the last few months we got two reports from Subversion users that > > passing certain short paths to 'svn' failed for them. > > > > E.g. > > [[ > > > mkdir ALongName.impl > > > dir /x > > ... > > 27/03/2015 12:50 <DIR> ALONGN~1.IMP ALongName.impl > > ]] > > And then passing this 'ALONGN~1.IMP' path works just fine. > > > > While > > [[ > > > mkdir api.impl > > > dir /x > > ... > > 27/03/2015 12:52 <DIR> API~1.IMP api.impl > > ... > > ]] > > And then passing the 'API~1.IMP' path doesn't (uses api.implP) > > (Samples copied from a mail from Stephen White to dev@subversion.a.o) > > > > The problem here is that the short path is actually longer than the long > > path. which triggers a bug in APR's truename code that we use. In this > > specific case the length of the updated path is not properly updated, to > > reflect the shorter total path length. > > > > > > When trying to write a testcase for this issue I found that Windows > > disables short path generation on user created NTFS filesystems these > > days. Only on system partition the default setup enables short path > > creation. (An admin can enable short paths via something like 'fsutil > > 8dot3name set R: 1', or a flag can be passed to format.exe) > > > > The attached patch fixes the problem, which appears to be specific for > the > > last path component (saveslash = FALSE). > > > > > > I would like to see this problem fixed in apr 1.5. > > > > The attached patch applies directly to 1.5.x and trunk. > > > > Thanks, > > Bert >
